Road scraper



Feb. 23v 1926.

Filed May 21, 1925 2 Sheets-Sheet 1 gvwentz Feb. 23 ,1926

. J. W. SHATTO ROAD SCRAPER Sheets-Sheet 2 Filed May 192 gnoaniz Patented F eb. 23, 1926 UNITED STATES PATENT. OFFICE.

JAMES W. sHA'rTo, or LORI-MOB, IOWA.

ROAD SCRAPER.

Application filed May 21, 1925 Serial No. 31,865.

To. all whom it may concern." i Be it known that 1-, James W. SHAT'ro,

a citizen of the United States, residing at Lorimor, in the county of Unionand State of Iowa, have invented certain new and useful Improvements in Road Scrapers, of Which the following is a specification.

This invention relates to road machinery and has for its object the provision of a road scraper of inexpensive construction which will be strong and durable and will operate efliciently to reduce to a smooth level condition all rough broken up surfaces. The invention seeks to provide a road scraper which as it is drawn over the surface of a road, will act progressively thereon so as to treat the entire surface and reduce all ruts and projections to a smooth level condition, means being provided to permit the machine at will to scrape the surface or to travel Without a scraping action.

The invention also has for its object the provision of easily operated simple means for adjusting the machine so that it will be operative or inoperative as may be desired. The invention is illustrated in the accompanying drawings and tvill be hereinafter fully set forth.

In the drawings:

Figure 1 is a plan view of my improy'ed road scraper; v I Fig. 2 is a central longitudinal section of the same;

Fig.8 is an enlarged sectional elevation ofthe mounting for the front roller;

Fig. at is an enlarged detail section on the line k-t of Fig. 2;

of the adjusting mechanism Fig. 6 is an enlarged detail section. on" the line 66 of Fig. 2, and v y Fig. 7 is detail perspective of a scraper hlade. p p

In carrying out the invention, I employ two side bars or beams 1 which are arranged in forwardly converging relation, as shown clearly in Fig. 1, and on the un- Fig. 5 is an enlarged view of a portion der side of Which are scraper blades 2 which are disposed equi -distantly along'the side bars andat an angle to the longitudinal axis of the samep These scrapers are of such Width that they are in overlapping; 1'e-. lation longitudinally of the machine a1 d v, consequently, as the machine is drawn over the suri ace of a road, the blades Will act progressively thereon and treat the entire area thereof so that it will be reduced to a smooth level condition free of all ridges or ruts. To the frontends of the side bars 1,1 secure, preferably by Welding, the plow blades 3 which converge to the medial centraliline of the machine, as shown in Fig. 1, and then extend torvv'ard along said line to be secured to the lo Were-nd of a clevis post Lat opposite sides of the same, as Will be understood upon reference to Figs. 1 and 2 of tliedrawings. a The clevis post is provided adjacent its frontgedge Witha plurality of'openings 5, in any one of which a draft device maybe engaged. It Will be noted that the plows 3 are of such extent that their rearends overlap the foremost scrapers 2 and, consequently, avoid the formation of a central ridge in the p'ath traveled by the machine. The forwardly projecting portion ofthe plow constitutes a point which will make an entering cut in transverse ridgespresented tothe travel of the plowso that such ridges will not form an obstruction turning aside the machine but will he engaged and quickly reducedto a level condition. The scraper blades 2 be seoiired directly tothe side bars 1 but I have foundit desirable yield the .lolade s to sleeves 6 which may be held in fixed-posi-l tions on the side bars by set screws in an obvious manner. The side bars areilat sided in cross section and the bores of the sleeves are of corresponding contour so that rotation of the sleeyes 'abotit the side bars will he} pi'elv ented Some of the sleeves are provided with vertically disposed lugs or ears 61,;1nd cross bars 7, Sand '9 circular cross sectii'm 'ai'e cure-d and extend bep'onding lu gs or ears; securg front cross bar is a crank arm 14 which ted within the. said hub or sleeve is the ver tical spindle l6 havinga fork 17 extending rearwardly from its lower end, a roller 1.8 being carried within the rear end of the fork. The spindle 16 may be retained within the hub sleeve by any convenient means, such as a pin 19, inserted through its upper end above the upper end of the sleeve. The roller 18, is a caster roller, being free to swing to either side so that it will automatically accommodate itself to the line of travel. Mounted for rocking movement up on the rear cross bar 9 are a plurality of rearwardly extending crank arms 20 carrying a connecting bar or axle member 21 in their rear ends, and upon the ends of this axle member 21 are mounted rollers 2 which constitute rolling supports for the rear end of the machine when the scrapers are not to operate. Rising from the cross bar 9 is a crank arm 23 whichis parallel to thecrank arm 14:, the upper ends of the said cranks is and 23 being connected by aeonnecting rod 2st having its ends pivoted to the upper extremities of the respective cranks whereby a like movement is imparted to both the front and the rear roller-carrying elements and, consequently, equal and simultaneous adjustment of the same is effected. Upon the rear portion of the connecting rod 24 is mounted a seat 25 so that the operator may ride upon the machine. A connecting link 26 is extended between the upper end of the crank 23 and the axle member 21 to brace and strengthen the structure andinsure instant response of the axle to the operation of the adjusting. mechanism. The lower end, of the crank 23 is preferably integral with the intermediate crank 20 thus forming an angle .lever and attaining strength. 7

Upon the intermediate cross bar 8 at the center of the same, I erect a pair of standards or posts 27 andbetween the upper ends of said posts and the outer ends of the front cross bar 7 forwardly and downwardly diverging braces 28 extend to impart the desired rigidity to the structure. In the upper ends of the said posts and braces, I pivotally engage the trunnions 29 extending diametrically from a collar 30 which is disposed. between the posts, the extremities of the trunnions being threaded, as shown at 31, to receive nuts 32 which, when they are turned home against the braces will firmly secure the collar in place. Extending through the collar 30 is an adjusting rod 33 which may rotate freely in the collar but is held against endwise movement by stop collars 34 secured upon the rod at opposite sides. of the sup-.

porting collar, as will be readily understood. The forward portion of the rod 33 is threaded, as shown at 35, and a hand wheel 36 is secured upon its rear extremity whereby an operator upon the seat 25 may readily turn the rod to effect the desired adjustment. The threaded portion of the rod engages with the threaded bore of a nut 87 which is secured between the upper ends of links 38 extending forwardly and having their front ends pivoted to the upper extremity of the crank 11.4. It will now be readily seen that, when the hand wheel 36 is turned, the rod 33 will rotate and the nut 37 will be caused to move longitudinally of the rod and, consequently, effect swinging mbvement of the through the connecting rod 2% to the rear cranks and, consequently, the rollers 18 and 22 will be raised or lowered as may be desired. I

From the foregoing description, taken in connection with the accompanying drawings, it will be seen that I have provided an exceedingly strong, compact and inexpensive machine which will effectually scrape the surface of a road so as to reduce it to a smooth level condition. 'Ilhe scrapers Will act progressively upon the ridges of the road and will deflect the loose'dirt cut from the ridges inwardly, and this loose dirt will be pushed into the hollows or ruts so that the ruts and hollows will be filled and the hummocks and ridges cut away. Ordinarily, the use of the scrapers alone will effect the desired results but if it be desired to more completely fill all the ruts and hollows a drag chain 40 may be attached to the rear ends of the side bars 1 and to the axle member 21 so as to extend transversely of the machine and drag upon the'ground to pull forward the loose surface dirt left by the scrapers, the drag chain effectually pulverizing the clods and dragging them forward so that they will drop intoand fill the hollows and ruts which may have escaped fill- 'ing as the scrapers passed over the road. W hen the scrapers are to act, the hand wheel 36 is turned in the proper direction to feed the nut 37; forwardly, thereby rocking the oral rs forwardly and lifting the rollers 18 and 21 from the ground, whereupon the weight of the machine will rest upon the scrapers. If the machine is to be moved from one road to another or is to make a return trip over a leveled surface, the hand wheel 36 is manipulated to effect downward movement of the rollers 18 and 22 so that the weight'of the machine will rest upon the rollers and the scrapers will be held clear of the surface.

Having. thus described the invention, I claim:

A road scraper comprising rearwardly diverging side bars, depending scraper blades rigidly secured to the side bars at intervals along the same, plow blades'secured to the front ends of the side bars llll and having their front ends connected, and means for applying draft through the plow blades to the side bars.

2. A road scraper comprising rearwardl y diverging side bars, depending scraper lades rigidly secured to said bars, cross bars mounted upon and extending between the side bars to maintain them in fixed relation, crank arms mounted for rocking movement upon the front and rear cross bars and rising from the respective bars in parallel relation, rollers supported from the said cross bars and connected with the respective cranks, a connecting bar connecting the upper ends of the cranks, and means supported upon an intermediate cross bar and connected with the forward crank to rock the cranks and effect vertical adjustment of the rollers.

3. A road scraper comprising rearwardly diverging side bars, depending scraper blades rigidly secured to said bars, a plurality of cross bars carried by and extending between the side bars, rollers supported on the front and rear crossbars for vertical rocking movement, cranks rising from the front and rear cross bars and connected with the respective rollers, a connecting bar extending between and pivoted to the upper ends of the respective cranks, a post rising from an intermediate cross bar, a rotatable rod swiveled upon the said post andhaving its forward portion threaded, a nut engaged upon the threaded portion of the said rod, and links attached to the said nut and having their forward ends pivoted to the crank upon the front cross bar.

a. A road scraper comprising rearwardly diverging side bars, sleeves fitted 011 the side bars and held against rotation about the same, scraper blades fixed to the under sides of the sleeves, cross bars secured to and ex tending between some of the sleeves, supporting rollers carried by the cross bars, means for vertically adjusting the rollers whereby to set either the rollers or the scraper blades in contact with a road, plow blades rigidly secured to and connecting the front ends of the side bars, and a draft device carried by the plow blades. I

A road scraper comprising rearwardly diverging side bars, depending scraper blades rigidly secured to the side bars, a plurality of cross bars carried by and extending between the side bars, cranks rising from the front and rear cross bars, a connecting rod attached to andextending between the upper ends of said cranks, a

supporting roller swiveled upon the forward crank, cranks secured to and extendingrearwardly from the rear cross bar, an

axle fitted through the rear ends of the rear \vardly extending cranks, rollers mounted on the axle, and means connected with the connecting rod for rocking the cranks.

In testimony whereof I ailix my signature.

JAMES W. SHATTO. [1,. 

